Method: Rack::ConditionalGet#call

Defined in:
lib/rack/conditional_get.rb

#call(env) ⇒ Object

Return empty 304 response if the response has not been modified since the last request.



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# File 'lib/rack/conditional_get.rb', line 28

def call(env)
  case env[REQUEST_METHOD]
  when "GET", "HEAD"
    status, headers, body = response = @app.call(env)

    if status == 200 && fresh?(env, headers)
      response[0] = 304
      headers.delete(CONTENT_TYPE)
      headers.delete(CONTENT_LENGTH)

      # We are done with the body:
      body.close if body.respond_to?(:close)
      response[2] = []
    end
    response
  else
    @app.call(env)
  end
end